Floor-surfacing device.



P. T. LEMASTER.

FLOOR SURFAGING DEVICE. APPLICATION FILED BIIPT.3,1908.

948,927, Patented Fb.8,1910.

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E sa'r TEN FLOOR-SURFACING DEVICE.

To all whom it may concern:

Be it known that I, PLEASANT THOMAS LEMASTER, a citizen of the UnitedStates, re siding at Spartanburg, in the county of Spartanburg and Stateof South Carolina, have invented new and useful Improvements inFloor-Surfacing Devices, of which the following is a specification.

This invention relates to floor surfacing devices, and one of theprincipal objects of the same is to provide a simple, reliable andeificient device for scraping, sand papering and polishing floors inwhich the scraper blade will be set at an angle to the machine frame soas to provide a shearing action of the blade, the scraper blade beingsecured between elastic cushions whereby a smooth and almost noiselessaction is obtained when the device is in operation.

Another object of the invention is to provide a wheeled frame mounted ontwo wheels and having a scraper set between elastic surfaces and at anangle to the frame in front, and to provide means whereby the scraperframe may be mounted upon a sand paper holder so that the latter may beused for sand papering the floor after it has been properly scraped.

Vith these and other objects in view the invention resides in the novelconstruction of elements and their arrangement in operative combinationhereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a side elevation of a floorsurfacing device constructed in accordance with the present invention,illustrating the same in a position to be drawn rearwardly to make acut. Fig. 2 is a similar view illustrating the device in position to bepushed forward to ob tain a new bite. Fig. 3 is a top plan View of thesame. Fig. 4 is a side elevation of a slightly modified form of thedevice. Fig. 5 is a top plan View of the form illustrated in Fig. 10.Fig. 6 is a transverse sectional view upon the line 1212 of Fig. 10.Fig. 7 is a side elevation of the front plate of the frame. Fig. 8 is aperspective view of the knife. Fig. 9 is a front elevation of theretaining plate. Fig. 10 is a perspective view of one of the elasticcushions.

Referring to the drawings for a more specific description of myinvention the numeral 1 designates a substantially rectangular frame,the front of which, however, is

Specification of Letters Patent.

Application filed September 3, 1908.

angular with respect to the sides thereof Patented Feb. 8, 1910.

Serial No. 451,541.

for a purpose which will presently appear. This rectangular frame ismounted upon wheels 2, and said wheels may be provided with a cushionedtire of leather or rubber. The wheels shown in Fig. 3 are mounted uponan axle 8 spaced apart by a central sleeve 4. In Fig. 11 the wheels 2are mounted on an axle 3 and are held separated by means of thepartitions l A handle 5 for operating the device is provided withoppositely disposed metal straps (3 which are bolted at 7 to theopposite sides of the frame. The bolt 7 may be loosened and the handleadjusted as to heights of different persons, as will be obvious.

Secured to the front angular end of the frame is a scraper blade 8. Thisscraper blade is secured in an elastic grip between rubber or leatherstrips 9, the strips being retained in position through the medium of aretaining plate 10. The plate 10 is provided with a plurality ofopenings adapted to aline with threaded openings provided in the frontplate of the frame, and these open ings are adapted for the reception ofsuitable bolts or other retaining elements by which the plate 10 issecurely retained upon the front end of the frame and whereby the blade8 is retained in locked position between the cushions 9. Rubber buffers11 are secured at the sides of the frame to prevent mar-ring of the baseboard or side walls in the operation of the machine. Suitable weights 12are secured to the top of the frame by means of bolts 13. The top of theframe is provided with a T-shaped slot let running transversely of theframe, and the heads of the bolts 13 are adapted to engage between thehorizontal walls provided by the T-shaped slot, thus providing meanswhereby the weights may be quickly and easily positioned upon the frame.The weights 12 may vary in weight to agree with the different classes ofwork for which the machine is adapted and these weights are made heavierover their front and cut away at their rear and at their sides so as toimpart sufficient weight directly over the cutting blade. It is to beunderstoodthat any desired number of these weights may be employed toagree with the hardness of the floor to be scraped or the depth of thecut required. These weights are adapted to rest upon resilient cushions15 whereby all jar incident to the operation of the device issuccessfully obviated. The weights 12 are each provided with a forwardlyprojecting buffer, constructed of rubber or other suitable resilientmaterial, and designated by the numeral 15. These bufiers are providedto serve as an effective means for preventing the device marring theplastering upon the walls as the machine is moved forward to obtain abite upon the floor adjacent the base board.

In Figs. 4 and 5 there is illustrated a slightly modified form ofconstruction. In these figures the front 25 of the frame is madeseparate, so that the knife carried by the front may be adjusted withrespect to the floor to a desired angle. The front 27 has two rearwardlyextending wings 28, provided with arcuate slots 29 and adapted to engagebetween the sides of the frame and are adapted to receive suitable bolts30 provided with nuts 31 secured upon the outside of the sides of theframe, and by which the front 25 is adjustably secured to the sides ofthe frame. The front 25 is pivoted to the frame through the medium ofsuitable pintles 32 engaging perforations provided upon ears integrallyformed upon the upper portion of the ends of the front plate 25.

The invention is simple in construction, can be quickly altered oradjusted to any desired kind of work for which it is intended, can besuccessfully used by unskilled persons and can be produced at acomparatively small cost.

It is tobe understood that in operating the machine the wheels arelifted from the ground and the machine pulled toward the operator. WVhenthe machine is to take a fresh bite it is pushed forward upon itswheels, the blade being elevated from the floor until the device isproperly positioned at the desired point, when the operation of scrapingis repeated.

Having thus fully described the invention what is claimed as new is:

1. In a device of the character described, a frame mounted on wheels,said frame having its top provided with an inverted T- shaped slot, ascraper blade adjustably and yieldably secured at an angle to the frame,weights superposed upon the frame, said weights having headed adjustablemembers adapted to engage the T-shaped slot of the frame, resilientbuflers projecting forwardly from the weights and resilient buffers uponthe'frame arranged at right angles to the buffers upon the weights.

'2. In a device for surfacing floors, a frame mounted upon wheels, saidframe comprising a pair of side members, one of a greater length thanthe other, the said members having their upper portions provided withalining T-shaped openings and their forward portions provided withorifices, a front member having its upper portion provided with earspivotally connected with the orifices of the sides, said front memberhaving its rear portion provided with wings having arcuate slots andadapted to lie adjacent the side members of the frame, securing elementsupon the sides whereby the front may be retained in its swung position,a knife blade resiliently connected with the front, weights superposedupon the frame, said weights having their rear portions reduced andprovided with openings, and threaded members having heads adapted toengage the T- shaped slots of the sides and the openings of the weightsand to be engaged. by

device.

mounted upon wheels, said frame being provided with an angularfront, ascraper blade being provided with resilient cushionsupon the front, aretaining plate secured to the front and adapted to retain the blade andcushions in position thereon, cushions upon the top of the frame, andremovable weights mounted upon the cushions and secured to the frame.

In testimony whereof I affix my signature in presence of two witnesses.

PLEASANT THOMAS LEMASTER. Witnesses:

JOHN E. THOMAS, SAM O. THOMAS.

provided with forwardly projecting buffers.

threaded nuts to retain the weights upon the 3. In a device forsurfacing floors, a frame

